Home / 80,167,986.45-120,251,979.68-68,688,860.85

Finding the Fourth Proportional to 80,167,986.45, 120,251,979.68 and 68,688,860.85

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Solution

The fourth proportional to 80,167,986.45, 120,251,979.68 and 68,688,860.85 is: 103,033,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,167,986.45 : 120,251,979.68 = 68,688,860.85 : x
  2. Step 2: Convert to fraction form
    80,167,986.45/120,251,979.68 = 68,688,860.85/x
  3. Step 3: Cross multiply
    80,167,986.45x = 120,251,979.68 × 68,688,860.85
  4. Step 4: Simplify right side
    80,167,986.45x = 8,259,971,498,833,102
  5. Step 5: Solve for x
    x = 8,259,971,498,833,102/80,167,986.45
  6. Step 6: Final answer
    x = 103,033,291.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.